They also invented a flute, a drum, the famous Inca panpipe (a collection of hollow tubes of various lengths stuck together), terrace farming, freeze dried foods, aqueducts, strange and scary art, a central government, a unified language, woven colorful textiles, gold and silver jewelry and statues, specialized professions, a system of communication (the roadrunners) and much more. They were very clever people.
If there are options to answer from this question and I am thinking of the correct answers from the book then it is: The Chinese focused on organizing peasants and the Soviets focused on organized factory workers.
The Alabama was built by the British 1862, it was a screw sloop-of-war of the Confederate States Navy.
Brigadier General P.G.T. Beauregard of the Confederate States Army ordered the bombardment of Fort Sumter after Major Anderson refused to evacuate the Fort.
Morrill Tariff (1861) was an increased import tariff in the United States and how money was raised for the north.
Greenbacks were paper currency (with a back printed in green) issued as northern currency in the American Civil War by the United States.
Stonewall Jackson was a war hero and a successful general during the American Civil War, he was a confederate west point graduate.